Automatic telegraph switching system



April 26, 1960 R. C. HERZFELD AUTOMATIC TELEGRAPH SWITCHING SYSTEM suyo gr 5 .L6

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csnmL omcs N300 INV EN TOR.

April 26, 1969 R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed Nov. 29, 195e 26 sheets-sheet 2 FIG. 2

2s a s 4 1 9 no l2 |4 :s

INVNTOR.

FIG. 4

April 25, 1960 R. c:f HERZFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM April 26, 1960 R. c. HERZFELD 2,934597 AUTOMATIC TELEGRAPH swITcHING SYSTEM Filed Nov." 29, 1956 26 Sheets-Sheet 4 MESSAGE No. h AsslGNeR soo (211 INVENTOR.

FIG. 6 N WQ R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH swTTcHING SYSTEM 26 Sheets-Sheet 5 April 26, 1960 Filed NOV. 29, .1955

CHANNEL NUMBER COMPARATOR 700 HUNDREDS INVENTOR.

April ze, 1960 Filed` Nov. 29, 1956 R. C. HERZFELD 26 Sheets-Sheet 6 I' mmv CANCEL REQUEST umr soo clzomz) l A836 f8 f clzozuz ARG- 866:] +2

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35o a) l i845 l en' @2803(28) 844 fly o seem a4e'l. l l B ccevsuzll Qslm l l ese 5 180ml w49 o o@ INVENTOR. FIG. 8 MQMW April 26, 1960 R. C. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed Nov. 29, 1956 26 Sheets-Sheet 7 (3) s2 (s) seam 56413) T sesta) 0 0 0 950 casa SENSING RELAY I i CHANNEL Deals. TERM. BLo K u cumuo.

coMPAR.

cHmNo. 900B conm.

9^ cvs: cm c 7,/ m m m INVENTOR. FIG. 9 l ma# v am@ April 26, 1960 R. c. HERZFELD 2,934597 AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed Nov. 29, 1956 26 Sheets-Sheet 9 INVENTOR W C -J 13g/MM alla.

FIG. Il

April 26, 1960 R. c. HERzFl-:LD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed NOV. 29, 1956 26 Sheets-Sheet lO INVENTOR. farb/i e# J FIG. l2

April Z6, 1960 R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH swITcHING SYSTEM Filed Nov. 29, 1956 26 Sheets-Sheet l1 136| lawn- #5 CI392 (I0) INVENTOR.

FIG. I3

April 26, 1960 R. c. HERzFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed Nov. 29, 195e ze sheets-sheet 12 INVENT OR.

FIG. I4

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APril ,25, 1960 R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH swITcHING SYSTEM Filed Nov. 29; 195e T, 26 Sheng-sheet 1s INVENTOR.

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April 26, 1960 R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed Nov. 29, 1956 26 Sheets-Sheet l5 INVENTOR. @rk/17 8 .J

FIG. I7

April 25, 1960 R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM K Filed NOV. 29, 1956 26 Sheets-Sheet 16 INVENTOR.

BY@ fm abt;

April 26, 1960 R. c. HERZFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM I Filed NOV. 29, 1955 26 Sheets-Shea*l 17 INVENTOR.

FIG. I9

April 26, 1960 R. c. Hr-:RzFELD 2,934,597

AUTOMATIC TELEGRAPH SWITCHING SYSTEM Filed Nov. 29, 1956 26 Sheets-SheetI 18 su. TnAusmr. |mmz3 2 o!) C'/ 0B .-D

MMSEQI 2025 -IP- i v INVENTOR.

- April 25 1960 R. c. HERZFELD 2,934,597

, AUTOMATIC TELEGRAPH SWITCHING' SYSTEM Filed Nov. 29, 1955l 26 Sheets-Sheet 19 l l l INVENTOR.

FIG0 l www BZXM April 26, 1960 Filed Nov. 29, 1956 CIBOIUB) FIG. 22

R. c. HERzr-'ELD 2,934,597

SEL. 2220 sTAnou #s INVENTOR. 

